Trolley.



0. OLBERG.

TROLLEY. APPLICATION FILED APR. 7. 1908.

Patented Dec. 15, 1908* UNIT D STATES IPAEENT OFFICE.

CHARLES oLBERa or PHILADELPHIA, PENNSYLVANIA TROLLEY.

Specification of Letters Patent.

Application filed April 7, 1908. Serial No. 425,678.

Patented Dec. 15, 1908.

To all'whom it'may concern:

Be it known that I, CHARLES OLBERG, a subiect of the King of Norway, residing at Phi adelphia, in the, county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Trolleys, of which the following is a specification.

This invention relates to trolleys, and more particularly to trolleys used for can ing loads from one lace to another, the 0 ject being to provi e very novel means for attaching the armsof the trolle t0 the supporting hook, so that they can eeasily and quickly attached or detached, whereby the trolley can be removed from the supporting beam forming the track for the same.

Another object of my inventionis to provide a trolley which is so constructed that the arms will be held in their proper position on thesupporting beam when in position on the hook, so that all danger of the arms becoming detached is prevented.

Another object of my invention is to provide a trolley which is composed of a very few parts which are so arranged and connected to the hook that all danger of the parts be coming detached accidentally is prevented.

These objects are obtainedb the novel arrangement and construction 0 parts here-' inafter fully described and shown in the accompanying drawings, in which Flgure 1, is an end elevation of my improved trolley showing the application of the same to a sup orting beam. Fig. 2, is a vertical section through the same. Fig. 3, is a detail side elevation of a'portion of one of the arms. Fig. 4, is an enlarged perspective view of a portion of the hook, and Fig. 5, is a side elevation of a modification showing a link adapted to be connected to the hook.

In the drawings A, indicates my improved trolley and B, the supporting I-beam. The trolley comprises a air of arms C and D, provided with whee s C, D, adapted to travel on the lower flange of the I-beam B, it

of course being understood, that any suitable.

enlarged portion D, the slots being the same width as the reduced end portions of the open loop, so when in position on the hook memher, they will be held into pro or engagement by the shoulders formed by tlie'reduced portions, whereby it will be impossible to re move the same.

In assembling the parts, the arm D, is forced through the opening in the loop, and the enlarged portion of the slot is drop ed down over the same, the arm C, is t on forced through the loop and drawn-upwardly on the reduced portion. The arm D, is then drawn back upon the other reduced portion, which brings the straight portions of the arms in their proper position, so as to prevent the arms from moving outwardly and securel look the wheels on the track.

W ien it is desired to detach the arms fromthe track, the hook is forced upwardly untilit is in alinement with the enlargement D,

the arm is then swung downwardly over the hook, and b moving the hook laterally, the arm 0, can e readily removed and then by returnin the arm D, into a vertical position, 7

the arm of the loo -From t e foregoing description it will be seen that I have rovided a very novel trolley, the arms of w ich are securely locked on the track b the weight of the load on the supporting ook, so that it is impossible for the same to move outwardly in-any way.

In the modification shown in Fig. 5, I show a link G,.constructed with a slot and adapted to be used in connection with a companion link for securing the link to a hook.

Having thus described my invention what I claim as new and desire to secure by Letters Patent is will pass out throughthe opening 1. A trolley'com rising a pair of arms I carrying wheels, an a supporting hookfor locking said arms together.

2. A trolley comprising a pair of arms carrying wheels having slotted ortions, and a hook provided with an open 00 adapted to fit in said slots for locking sai arms together.

3. A trolley comprising a air of arms carrying wheels provided wit registering slots, 0 a hook 'rovided with an open loop having a reduced portion adapted to receive said slots for holdlng said arms together.

4. A trolley comprising a pair of arms carrying Wheels provided with parallel p0r tions having registering slots, one of said slots being enlarged and a hook provided -With an open. loop having reduced ends adapt-ed to be seated in said slots for holding said arms together.

5. The comblnzition with a track, of FL trolle Y COIYIHiSiH 21 'mir of arms irovided j n i With Wheels adapted to he arranged on said track, said arms being provided with parallel j portions having reduced ends and regisiviiiig' slots, one of said arms being provided with an enlergedopening and a hook having an open loop the ends of which. are reduced,

adapted te be seated in said slots for holding '15 said arms together.

6. A device of the kind described comprisin testimony whereof I have signed my name to ,this specification in the presence of two subscribing Witnesses.

CHARLES OLBERG. Witnesses:

Km P. WRIGHT, 1%. ii. KREUKEL. 

